How the Facebook data scandal unfolded
Media playback is unsupported on your device
Video

How the Facebook data scandal unfolded

The company now believes data from 87m users was collected by Cambridge Analytica. Here's why it matters.

This video has been optimised for mobile viewing on the BBC News app. The BBC News app is available from the Apple App Store for iPhone and Google Play Store for Android.

  • 05 Apr 2018